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Well all cards are tested with the same cpu if your driver as high cpu usage then a slow cpu will not give you the same result. In most cases the single core speed of a cpu helps to scale with older engines - if you are searching for benchmark records, over 60 fps is usally never needed. doom 3 is certainly a bit slow, should be compared with win maybe to see the raw performance of the chip. If you like you can oc it a bit as well, with simple engines it should scale well, the only "reference" oc test i found was using bf3. Of course for several cards you can install binary drivers and get much more speed, intel has got only one driver - if the performance is not fast enough for you then all you can do is to add an extra card. For desktop systems thats a piece of cake. But laptops the intel hd 4000 seems to be a good choice, no hybrid solutions which only work with weird hacks.

Well all cards are tested with the same cpu if your driver as high cpu usage then a slow cpu will not give you the same result. In most cases the single core speed of a cpu helps to scale with older engines - if you are searching for benchmark records, over 60 fps is usally never needed. doom 3 is certainly a bit slow, should be compared with win maybe to see the raw performance of the chip. If you like you can oc it a bit as well, with simple engines it should scale well, the only "reference" oc test i found was using bf3. Of course for several cards you can install binary drivers and get much more speed, intel has got only one driver - if the performance is not fast enough for you then all you can do is to add an extra card. For desktop systems thats a piece of cake. But laptops the intel hd 4000 seems to be a good choice, no hybrid solutions which only work with weird hacks.

You bring up an important point. Following that fact, since the INTEL GPU is IGP *in* the CPU, any power consumption comparisons for it are meaningless unless the CPU is swapped over to one withOUT IGP. The thing is going to sit there sucking down at least SOME power, whether you're running it or not.

I also question the performance tests. Intel is known for playing games in order to benchmark higher. It wouldn't surprise me one bit if there was something sneaky in the CPU that knows when someone else's GPU is attached and does something like cutting memory bandwidth. Intel is known for pulling sneaky crap, like designing CPUs FOR the benchmarks, rather than the real workload.

Some people are going to flame me for this, but the reason why Intel beats AMD on benchmarks is because AMD is actually innovative -- reinvent the wheel, then wait for software to catch up, rather than bolting a supercharger onto an '85 Lada and calling it fast.